feat(tours): bike tours in the planner, CyclOSM, and the planned cards' last points (BIK-01 to BIK-06, RTE-01, IO-01, LIB-02)

The tour type is a dropdown; a bike tour picks its profile, routes for it,
says when a point lies off every way, and shows what it runs on: surfaces,
kinds of way and, for a mountain bike, the trail grades, each pointed at on
the map. A type's own map (OpenHikingMap for a hike, CyclOSM for a bike tour)
is offered while a tour of that type is open, with an admin switch each.

From the planned cards: a hike avoids steep climbs, steps or ferries, nothing
else; a saved tour can be shared where the platform takes GPX files; and the
tours rail adds a tour from one menu: plan new, import GPX, or take one over
from another trip.

client/src/api/tourBaseMaps.ts

@@ -0,0 +1,16 @@
+import type { AdminFeatureToggleResponse } from '@trek/shared';
+import apiClient from './client';
+
+/** An admin's switch for a map the Tours planner offers on its operator's terms. */
+function tourBaseMapAdminApi(path: string) {
+  return {
+    get: (): Promise<AdminFeatureToggleResponse> => apiClient.get(path).then((r) => r.data),
+    update: (enabled: boolean): Promise<AdminFeatureToggleResponse> =>
+      apiClient.put(path, { enabled }).then((r) => r.data),
+  };
+}
+
+/** MAP-01: OpenHikingMap for a hike. */
+export const hikingMapAdminApi = tourBaseMapAdminApi('/admin/tours-hiking-map');
+/** BIK-06: CyclOSM for a bike tour. */
+export const cycleMapAdminApi = tourBaseMapAdminApi('/admin/tours-cycle-map');